Since everything takes place from the Wilderness, there's a decent chance you will become a target of gamers killing. Make certain not to alch the keys that you have found the immediately. Instead get three or two and go to the bank to monetize your loot. Alching on wilderness would result in turning them in to gold which is lost upon death while unalched ones might be kept as safe from death punishment. A maximum of 3 keys could be held at a time and even more if you've completed a number of RS gold the Wilderness Diary but generally farming two before banking is your safest option.
BLACKJACKING (SAFE) Prerequisites: At least 65 at Thieving ability (although over 80 is highly recommended), Rogue Trader minigame, Rogue Equipment and The Feud quest. A very simple yet efficient method of making money whilst also training Thieving ability comes with blackjacking Menaphite Thugs.
By minding these NPCs you will be able to pickpocket them multiple times before they regain consciousness. It is an excellent opportunity to generate gold as you do other things such as watching TV or playing on your telephone since it takes hardly any attention from the user. If you wish to learn more about this money making process head over to buy OSRS gold our Blackjacking Guide.